921016343 has 4 divisors (see below), whose sum is σ = 991863768. Its totient is φ = 850168920.

The previous prime is 921016337. The next prime is 921016379. The reversal of 921016343 is 343610129.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343610129 = 439 ⋅782711.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-921016343 is a prime.

It is a super-2 number, since 2×921016343² = 1696542208146187298, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (921016643) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35423693 + ... + 35423718.

It is an arithmetic number, because the mean of its divisors is an integer number (247965942).

Almost surely, 2^921016343 is an apocalyptic number.

921016343 is a deficient number, since it is larger than the sum of its proper divisors (70847425).

921016343 is a wasteful number, since it uses less digits than its factorization.

921016343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70847424.

The product of its (nonzero) digits is 3888, while the sum is 29.

The square root of 921016343 is about 30348.2510698722. The cubic root of 921016343 is about 972.9468407367.

The spelling of 921016343 in words is "nine hundred twenty-one million, sixteen thousand, three hundred forty-three".